and so like if aircraft go from san francisco to new york faster than the speed of sound, guess what there's a trail underneath there. wreckage, honey, wreckage, because that shock wave is gonna drag right across the ground and hit everyone underneath there. so, you got a chicken coop there that's not built too well, right? all of a sudden-- and it is even worse, 'cause it turns out that the high-pressure region is followed by a low-pressure region. ever be waterskiing? then you go to the edges, hoop, you come up like that? what's on the other side. hoo, down. --on this side, called the bow wave, you know? i think not the bow wave, the tail wave, see? 'cause you get overlappings of high pressure and you get overlappings of low pressure. in the case of sound, you get overlappings of-- what do you call it, compressions. where all the compressions overlap, high pressure, where all the rarefactions overlap, low pressure is what you get. all of a sudden boom, high pressure followed by low pressure. this are like boom, boom and-- so it's even more devastating than sonic boom because of rap